Resizo

Resizo is the fastest way to resize images on your Mac. Drop one photo or a hundred into the window, choose a size, and hit "Resize and Save" — Resizo takes care of the rest.

ALL AT ONCE
• Resize whole folders of photos together, processed in parallel across your Mac's cores.
• Progress bar, per-image results, and the option to cancel at any time.
• See right away how much space you saved, photo by photo and in total.

PRECISE SIZES
• In pixels: set the width, the height, or both. With proportions locked, the image fits the box without distortion.
• By percentage: from 5% to 300%.
• One-click presets: Web (1920 px), Social (1080 px), Icon (512×512), Email (800 px). Create your own and hide the ones you don't use.
• Portrait photos stay portrait: the camera orientation is applied automatically.

FORMATS
• Opens PNG, JPEG, HEIC, HEIF, TIFF, BMP, GIF, and WebP.
• Saves in the original format, as PNG, or as JPEG with adjustable quality.
• Turn iPhone HEIC photos into JPEGs that work everywhere.

YOUR PRIVACY COMES FIRST
• No uploads, no account, no tracking: your images never leave your Mac.
• By default Resizo strips EXIF metadata from exported files: date, camera model, and GPS location. Share photos without revealing where you took them. Need it? Keep it with a single option.

SIMPLE AND SAFE
• Your originals are never touched: Resizo always creates a new file with a suffix of your choice (e.g. "photo-resized.jpg") and never overwrites an existing file.
• Save to Pictures › Resizo or any folder you choose; Resizo remembers it.
• It also remembers the format, quality, and suffix you used last time.

BUILT FOR macOS
• Drag images onto the Dock icon or use "Open With…" in Finder.
• Right-click images in Finder › Services › "Resize with Resizo".
• Keyboard shortcuts: ⌘O to add, ⌘↩ to resize, ⌘⌫ to remove selected images.
• Light, dark, or automatic appearance; interface in English and Italian.

Perfect for preparing photos for the web, social media, email, marketplaces, or documents — and for freeing up disk space without the effort.